import java.util.Scanner;

public class Main {

public static void main(String[] args) {
Scanner cin = new Scanner(System.in);
String str = cin.nextLine();
String[] strs = str.split(" ");
int num = 0;
for (int i = 0; i < strs.length; i++) {
if (!strs[i].trim().equals("")) {
num++;
}
}
System.out.print(num);
}
}